Improvement in harrows



mCKMAN L DEVOE.

Harrow;

No. 83,962. Patented Nov, 10, 1868.

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v PETERS. PHOTOMTMGQRAQN wAsmN 0N G C Y .fz e .W *est dimmi f i taten www @anni @fixa H. M. I-IICKMAN AND BfG. DEVOE, OF VANDALIA7 ILLINOIS.

Letters .Patent No. 83,962, dateeNoccmber 10, 1868.

I'IMPRGVEMENT IN HARROWS.

The Schedule referred to in these Letters Patent: and making paxt of the saune.

To whom tt may concern:

We do hereby declare the following to be a full andv exact description of' the same, reference being had to the drawings that accompany and form a part of these specifications.

Figure l is a perspective view of the harrow, as it would stand ready for use.

Figure 2, verticalbisection, showing the manner of arranging and uniting the dii'erent parts.

Figure 3, sectional View ofthe hub'and its immediate connections.

The nature of our invention relates to a new method of forming the central portion of a horizontally-rotating harrow, and manner of attaching the teeth-bearing bars thereto, the manner of bracing the same, and, furthermore, an appliance for the protection of young trees, in case the harrow is used among them.

.Letter A represents a hexagonal central piece or hub, of metal, with mortises in each of the six sides, to receive the inner ends of the bars that carry the teeth. l

IB, bars or arms for the teeth, and arranged as represented in gs. l and 3. i

C, a standard passing through and rising om the centre of the hub"A,and the upper portion in the form of `a spindle, which passes Athrough the draw-bar D. (See-iig. 2.) v

D, draw-bar resting on the standard G, as illustratedin g. 2.

E, a spring-brace, to aid in keeping the draw-bar steady, and well in position.

F, a brace, one end of which, in the form of a fer'- rule, surrounds the standard O. The otherv end attaches to the draw-bar, near its outer end. (See figs. l and 2.)

l G, a metallic rod, arranged asin iig. 1,' and attached to the bars orarms B by the staples 71, and serves to brace and give support to the frame.

I, a pliable covering upon the rod G, to prevent injury to young trees, the thorough working of the soil laround them being often very desirable, while to bruise the trunks-is very injurious.

j, straps of band-iron covering the top of the arms B. k, handles like a pair of plow-handles, used for steady-l ing and lifting the implement when occasion requires. Our harrow is of that class that rotates horizontally,

either to the right or left, according as it meets more resistance on the one side than on the other.

' These hai-rows may, for smooth land, be made to cut from seven to eight 'feet at a time; for rough land, they should not be so large.

The rod G should be three-fourths to seven-eighths of an inch in diameter.

Fig 3 illustrates the method of attaching the arms B to the hub.

Thestraps j should be so puty on as to be removed readily when it shall become necessary to remove the teeth.

These straps serve to keep out the wet, and to prevent the teeth from working upwards, as they otherwise often would, to the annoyance 'of the farmer.

Vha't we claim as of our invention, and desire to secure by Letters Patent, is-

1. The central hub A, constructed substantially as described and set forth. l

2. The combination of the hubl A and the beams B, substantially as illustrated. 'p

3. rIhe hub A, the standard C, the draw-bar D, the brace F, and the spring-brace E, all arranged substantially as described and set forth.

4. The covering I, of rubber or other suitable substance, upon the rod G, as and for the purposes set forth.

` In testimony whereof, we have signed our naines to this specification, in the presence of two subscribing witnesses.

H. M. HIGKMAN. B. G. DEVO'E. Witnesses:

F. M. BALDwm, F. S. MCCORD. 

